52531320 has 64 divisors (see below), whose sum is σ = 159253920. Its totient is φ = 13860864.

The previous prime is 52531313. The next prime is 52531331. The reversal of 52531320 is 2313525.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9384 + ... + 13896.

Almost surely, 2^52531320 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 52531320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (79626960).

52531320 is an abundant number, since it is smaller than the sum of its proper divisors (106722600).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

52531320 is a wasteful number, since it uses less digits than its factorization.

52531320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4624 (or 4620 counting only the distinct ones).

The product of its (nonzero) digits is 900, while the sum is 21.

The square root of 52531320 is about 7247.8493361824. The cubic root of 52531320 is about 374.5180653471.

Adding to 52531320 its reverse (2313525), we get a palindrome (54844845).

The spelling of 52531320 in words is "fifty-two million, five hundred thirty-one thousand, three hundred twenty".